Microsoft may have built several Xbox set-top box prototypes

Microsoft's rumoured entertainment set-top box does exist, but the company remains unsure whether to launch the device, reports claimed on Thursday

From Techradar:

The Wall Street Journal's sources told the paper that several prototypes have been built for the simple streaming device, which would allow access to the Xbox Live suite of entertainment applications.The most recent iteration allowed Kinect-enabled gesture control, according to the report, and would utilise the same user interface as the new Xbox console, set to be unveiled on May 21.The set-top box, which speculation has suggested would not be a core gaming device, could allow Microsoft to attract more Xbox Live sign ups while challenging the Apple TV and Roku set-top boxes.